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"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."
-Kelly Starrett

I heard about this a while back...sound interesting and might actually work. i wonder how effective a bucket of ice water in the gym would be? Re-reading the article the vacum element likely brings more blood flow to the palm, allowing more heat to vent?

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"Survival will be neither to the strongest of the species, nor to the most intelligent, but to those most adaptable to change."
C. Darwin

i would just try the EMS approach to rapid systemic cooling--put some ice on the carotid, femoral, and axillary arteries. a hell of a lot less expensive. all you'd need is a mini freezer in the gym. i'm sure walmart sells those for less than $4K.

Anyone up for an experiment? The gym on the air force base might frown upon me taking a thing of ice into the gym with me. Just a guess.

__________________
"And for crying out loud. Don't go into the pain cave. I can't stress this enough. Your Totem Animal won't be in there to help you. You'll be on your own. The Pain Cave is for cowards.
Pain is your companion, don't go hide from it."
-Kelly Starrett